Even though he steals his blanket, and locks him in the pantry, and likes to tease him a lot, Tucker loves Grandad. But I suppose he also shares his tomatoes, and shows him the horny toads and explores the back yard. He heard his voice when were were at Ellie's water polo game (which she won and did awesome at!) even though he couldn't see him, he turned around and started searching. It was pretty cute.